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/*
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* Copyright (C) 2015 Christian Ehringfeld <c.ehringfeld@t-online.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "sqliteschema.h"
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#include "../database.h"
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#include <QSqlRecord>
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#include <QSqlResult>
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#include "sqlitequerybuilder.h"
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using namespace CuteEntityManager;
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SqliteSchema::SqliteSchema(QSharedPointer<Database> database) : Schema(
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database, QSharedPointer<QueryBuilder>(new SqliteQueryBuilder(this, database))) {
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}
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SqliteSchema::~SqliteSchema() {
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}
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QSharedPointer<QHash<QString, QString>> SqliteSchema::getTypeMap() {
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if (this->typeMap->empty()) {
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this->typeMap->insert(TYPE_PK,
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"integer PRIMARY KEY AUTOINCREMENT NOT NULL");
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this->typeMap->insert(TYPE_BIGPK,
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"integer PRIMARY KEY AUTOINCREMENT NOT NULL");
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this->typeMap->insert(TYPE_BOOLEAN, "boolean");
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this->typeMap->insert(TYPE_SMALLINT, "smallint");
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this->typeMap->insert(TYPE_INTEGER, "integer");
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this->typeMap->insert(TYPE_BIGINT, "bigint");
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this->typeMap->insert(TYPE_FLOAT, "float");
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this->typeMap->insert(TYPE_DOUBLE, "double");
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this->typeMap->insert(TYPE_FLOAT, "real");
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this->typeMap->insert(TYPE_DECIMAL, "decimal(10,0)");
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this->typeMap->insert(TYPE_TEXT, "text");
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this->typeMap->insert(TYPE_STRING, "text");
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this->typeMap->insert(TYPE_CHAR, "char");
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this->typeMap->insert(TYPE_BINARY, "blob");
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this->typeMap->insert(TYPE_DATETIME, "datetime");
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this->typeMap->insert(TYPE_DATE, "date");
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this->typeMap->insert(TYPE_TIME, "time");
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this->typeMap->insert(TYPE_TIMESTAMP, "timestamp");
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this->typeMap->insert(TYPE_MONEY, "decimal(19,4)");
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}
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return this->typeMap;
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}
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QStringList SqliteSchema::findTableNames(QString schema) {
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Q_UNUSED(schema)
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auto l = QStringList();
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QString sql =
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"SELECT DISTINCT tbl_name FROM sqlite_master WHERE tbl_name<>'sqlite_sequence' ORDER BY tbl_name";
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auto q = this->database->getQuery();
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q.prepare(sql);
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this->database->select(q);
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while (q.next()) {
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l.append(q.value(0).toString());
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}
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return l;
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}
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QHash<QString, QStringList> SqliteSchema::findUniqueIndexes(
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const QSharedPointer<TableSchema>
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&table) {
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QHash<QString, QStringList> uniqueIndexes = QHash<QString, QStringList>();
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QSqlQuery q = this->database->getQuery();
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q.setForwardOnly(true);
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q.exec("PRAGMA index_list(" + this->quoteSimpleTableName(
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table->getName()) + ')');
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while (q.next()) {
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QString indexName = q.value("name").toString();
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QSqlQuery q2 = this->database->getQuery();
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q2.setForwardOnly(true);
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if (q.value("unique").toBool()) {
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q2.exec("PRAGMA index_info(" + this->quoteSimpleTableName(indexName) + ")");
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QStringList indexInfo = QStringList();
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while (q2.next()) {
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indexInfo.append(q2.value("name").toString());
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}
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uniqueIndexes.insert(indexName, indexInfo);
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}
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}
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return uniqueIndexes;
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}
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void SqliteSchema::findConstraints(const QSharedPointer<TableSchema> &ts) {
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QSqlQuery q = this->database->getQuery();
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q.setForwardOnly(true);
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q.exec("PRAGMA foreign_key_list(" + this->quoteSimpleTableName(
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ts->getName()) + ')');
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auto foreignKeys = ts->getRelations();
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while (q.next()) {
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bool ok;
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int id = q.value("id").toInt(&ok);
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if (ok) {
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auto rel = new QSqlRelation(q.value("table").toString(),
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q.value("from").toString(),
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q.value("to").toString());
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auto ptr = QSharedPointer<QSqlRelation>(rel);
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foreignKeys.insert(QString::number(id), ptr);
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}
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}
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ts->setRelations(foreignKeys);
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}
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QSharedPointer<TableSchema> SqliteSchema::loadTableSchema(QString name) {
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auto ptr = QSharedPointer<TableSchema>(new TableSchema());
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ptr->setName(name);
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ptr->setFullName(name);
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if (this->findColumns(ptr)) {
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this->findConstraints(ptr);
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} else {
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ptr.clear();
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}
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return ptr;
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}
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